Method of and apparatus for control of train movements



F. J. SPRAGUE 1,780.148

METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed D804 31 .1914 47 Sheets-Sheet 1 Oct. 28, 1930.

Oct. 28, 1930. F. J. SPRAGUE METHOD OF AND APPARATUS FOR CONTROL OF'TRAIN MOVEMENTS Filed Dec.

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Oct. 28, 1930. F. J. SPRAGUE METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS ,1914 47 Sheets-Sheet 3 Filed Dec.

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METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS 31 ,1914 47 Sheets-Sheet 4 Filed Dec.

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METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec. 31 ,1914 47 Sheets-Sheet a 7 WITNESiSt 1W 4 A 7 +(ZVQ ATTORNEYS Oct. 28, 1930. F; J. SPRAGUE 1,780,148

METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec. 31 ,1914 47 Sheets-Sheet 6 WITNESSES INVENTOR VEMENTS Oct. 28, 1930. F. J. SPRAGUE METHQD OF AND APPARATUS FOR CONTROL OF TRAIN MO 47 Sheets-Sheet 7 Filed Dec. 31 ,1914

Oct. 28, 1930. SPRAGUE 1,780,148

METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec 31 ,1914 47 Sheets-Sheet 8 WITNESSES: lNl/E/VTOR Oct. 28, 1930. F. J. SPRAGUE 1,780,148

METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec. 31 ,1914 47 Sheets-Sheet 9 WITNESSES; 7 //v l/EN TOR 941:? h). M. w rf g 47 Sheets-Sheet. 10

Oct. 28, 1930. F. J. SPRAGUE METHOD OF AND APPARATUS FOR CONTROL OF TRAIN HOVEIENTS Filed Dec. :51 ,1914

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METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec. 31 ,1914 47 SheetsSheet l3 INVENTOR WITNESSES: 27

Oct. 28, 1930. F. J. SPRAGUE 1,780,148

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METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMEQTS Filed Dec. 31 ,1914 47 Sheets-Sheet 16 F/eaz. 428 T420 465 Ha 433 T 2 WIT/(E8858: INVENTOR Oct. 28, 1930. F. J. SPRAGUE 1,780,148

METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec. 51 ,1914 47 Sheets-Sheet l7 WITNESSES INVENTOR IR BY mu w. m.

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METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec. 31 ,1914 47 Sheets$heet 18 FIG. 44.

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METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed DOC. 31 ,1914 4'7 Sheets-Sheet l9 R. CMW (W w.

Oct. 28, 1930. F. J. SPRAGUE 1,780,148

METHOD OF AND APPARATUS FOR CONTROL OF TRAIN MOVEMENTS Filed Dec. 31 ,1914 47 Sheets-Sheet 20 ctf INVENTOR 

